The influence of time of precommercial thinning on the colonization of Douglas-fir by three species of root-colonizing insects.

Document Type

Article

Publication Date

1-1-1986

Abstract

In plantations of Pseudotsuga menziesii in W Oregon, precommercial thinning resulted in significantly increased abundances of insect vectors of black-stain root disease. Hylastes nigrinus, Pissodes fasciatus and Steremnius carinatus were monitored. Abundances of these beetle species were significantly higher in thinned plots, but numbers of H. nigrinus and P. fasciatus caught by unbaited traps in plots thinned in May was reduced relative to plots thinned in September or January. -from Authors

Publication Source (Journal or Book title)

Canadian Journal of Forest Research

First Page

745

Last Page

749

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